mod two_sum;
mod count_subarrays_with_fixed_bounds;
mod bitwise_xor_of_all_pairings;
mod perfect_squares;
mod last_stone_weight;
mod assign_elements_to_groups_with_constraints;
mod assign_cookies;
mod count_subarrays_of_length_three_with_a_condition;
mod count_subarrays_with_score_less_than_k;
mod maximum_number_of_tasks_you_can_assign;
mod array_partition;
mod count_unreachable_pairs_of_nodes_in_an_undirected_graph;
mod minimum_domino_rotations_for_equal_row;
mod maximum_number_of_words_found_in_sentences;
mod number_of_equivalent_domino_pairs;
mod domino_and_tromino_tiling;
mod sort_colors;
mod painting_a_grid_with_three_different_colors;
mod zero_array_transformation_iii;
mod maximum_difference_by_remapping_a_digit;
mod max_difference_you_can_get_from_changing_an_integer;
mod maximum_difference_between_increasing_elements;
mod maximum_manhattan_distance_after_k_changes;
mod find_lucky_integer_in_an_array;
mod contains_duplicate_ii;
mod defuse_the_bomb;
mod finding_pairs_with_a_certain_sum;
mod longest_nice_substring;
mod reordered_power_of_2;
mod longest_subarray_of_1s_after_deleting_one_element;

mod cn {}